@Shreesh Do you mean there is no internet on the MR6400 if you manually choose band 3? What if you just leave it auto, what is the band it will connect? Please show us the screenshot of the Status...

@The-Geek Thank you very much for getting back with valued info, we appreciate it. Kindly report this back to the engineers directly, I think they will be happy to continue the debug with you to...

@sudoranger emmmm. Be careful with the inserting and pulling out the SIM card on the device next time. Anyway, it's glad to know your issue is resolved. Good day.

@GilbertoVal Hi, thanks for reporting the issue to the community. Can you please confirm if the TVs can still see the wireless network, I guess they only support 2.4G? What if you login to the web...

@KYKY Hi, I'm afraid we cannot verify the hardware version of the device sold on Amazon beforehand for you, you may check with Amazon if they have this info by referring to the SN or MAC. MR200 v4...

@TKA Is it the original power adapter? Was there any power cut or bad weather or firmware upgrading before it fails to be powered on? Try to hard reset it by holding the reset button or hole for 10s....